Table 2.
Occult invasions and sentinel/non‐sentinel node status in the sentinel node‐positive group
| Case no. | Occult invasion | Sentinel node status | Non‐sentinel node status | |||
|---|---|---|---|---|---|---|
| Number of positive/removed nodes | CK19 mRNA (copy/μL) | Method | Number of positive/removed nodes | CK19 mRNA (copy/μL) | ||
| 1 | (+) | 1/1 | 260 | Histology† | 0/12 | NA |
| 2 | (+) | 1/4 | 270 | OSNA | 0/14 | 0 |
| 3 | (+) | 1/2 | 280 | Histology† | 0/11 | NA |
| 4 | (+) | 1/6 | 400 | OSNA | 0/14 | 0 |
| 5 | (+) | 1/3 | 620 | Histology† | 0/15 | NA |
| 6 | (+) | 1/2 | 250‡ | OSNA | 1/6 | 330‡ |
| 7 | (+) | 1/3 | 1300‡ | OSNA | 2/22 | 7800 |
| 8 | (−) | 1/5 | 400 | OSNA | 0/26 | 240 |
| 9 | (−) | 1/3 | 460 | OSNA | 0/9 | 2 |
| 10 | (−) | 1/4 | 780 | OSNA | 0/13 | 150 |
| 11 | (−) | 1/1 | 1400 | Histology† | 0/20 | NA |
| 12 | (−) | 1/1 | 1400 | OSNA | 1/15 | 780 |
CK19, cytokeratin 19; OSNA, one‐step nucleic acid amplification assay; NA, not available.
†Permanent histology using a single‐sectioned lymph node. ‡CK19 mRNA copy numbers in the diluted samples.